Annual growth rings are formed in woody stems
principally through the activity of the
a. pericycle.
b. pith.
c. vascular cambium.
d. mesophyll.
e. endodermis.
Answer: c
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What % of energy will be transferred from one trophic level to the next?
a. 5 - 20% b. 5 - 25% c. 5 - 10% d. 5 - 15% e. 5 - 30%
Which of the following is NOT a fat soluble vitamin?
a. A b. C c. D d. E e. K
Which of the following is not present in a nucleotide?
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